Earth-working implement.



P. GLKSER.

EARTH WORKING IMPLEMENT. APPLICATION FILED NOV. 2, 1911.

Afrom EY I COLUMBIA PLANOGRAPH 60.. WASH NNNNNNNNN c.

Patented Jan-7, 1913.

, UNITED, sTAtr s PATENT OFFIC r EARTH- ORKING' MflC l Specification of Letters Patent) To all whom it may concern:

Be it known that I,'FEBDINAND GLAsER,

a subject of the Emperor of Germany, residing at Limbach, Saxony,Germany, have invented Improvementsgiin Earth-Working Implements, of which the following is a specification. c

The objeotof this invention is toprovide an earth working implement-and comprising a handle to which can be readily'fixed in an easily removablemanner, a number of interchangeable tools such as a pickax, spike,

sand rammer head, fork,g rubb1ng hoe, mattock and hammer head.

Tool handles adapted to be fitted with in-' terchangeable working parts or tools have i already been made, but as heretofore constructed there is no certaintly of the interchangeable parts being held in place in an absolutely firm manner.

7 According to this invention the handle is provided with asocket or holder having projecting boss or bosses tapering outwardly and the tools are each formed with a corresponding recess that tapers inwardly so that use of a tool when fitted onthe boss or one of them tends to tighten it thereon.

Figures 1 and 2 of the accompanying drawings illustrate in front and side elevation respectively the handle of a universal tool according to this invention fitted "with a pickax head (Z and with a sand rammer f. Figs. 3 and 4 illustrate in front and side elevation respectively a fork or tined hoe tool or fitting g;

The socket or holder a of theiniproved universal tool or appliance is :providedon holder at.

V Patented Jan. 1913.; Application filed November 2, 1911. Serial No. 658,250. I

opposite sides withv taperedijbosses b and c .7

of. round cross section on which there can recessese, such as a pick-point. dyjasand ramm'er f, (Figs. 1 and 2).or a 'tined hoe} Y "The useof the conical bosses asmeansfof 7 v V connection renders it unnecessary toem...

or forkg (Figs. 3 and4).

ploy any additional fastening meanssu'ch as a screw,pin or the like, as the bosses are causedfjto fit the tools tightly working j'withthe tool and are only loosened by the socketor' holder being tapped on theside.

To prevent. the special tool fittings from partiallyrotating out of the proper posi- J j i each such tool or fitting is formed qwithia pzj projecting nose Z, adapted to engagefthe.

portion of the socket For, 7

tion after being put on the socket or holder square central What Ielaim is f An earthworking implement a handle, a socket or holder fixed [to s id socket orholder.

Signed at Chemnitz,-'Saxony, this eighteenth day of October, 1911.

handle, a conical boss on said socket or holder and a number of interchangeable tools each formed with a conical hole adaptedto fit said boss and with a lug. adapted to "bear against one side of said.

FERDINAN foLAsE-R.

copies ot thh patent may be obtained for five cents each, cby addressing the Commissioner or Patenti,

Washington, D, G. i 

